Tag: sample-size
Interview Questions
- How big does the A/B test need to be?
- A two-day test came back flat, is the feature useless?
- Want half the margin of error? Prepare for 4x the data
- Does p = 0.001 mean a big effect?
- How big a sample for 90% power?
- How many samples to pin down a mean latency?
- Shrinking the margin from 2pp to half a point
- The sample-size cost of 99% versus 95% confidence
- How many samples for a 1% margin of error?